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Page 9-3COAX HOST CONFIGURATION
Coax Host Configuration Within Data Streams
Configuration options may also be changed within a coax data stream
without changing any dip switch settings (i.e., without setting dip switch B7
in the ON position) and without pressing the RESET button on the ULTRA
front panel. This is useful for embedding configuration changes within a
data stream.
To change the ULTRA configuration in this manner, bracket the normal
configuration string with Trigger 1 - question mark - Trigger 1 (¢?¢ by
default). For example, if Trigger 1 is the default cent sign (¢), to change
Option #1 to 0 (infinite line length), the command would be:
¢?¢¢?1=0;¢?¢
In effect, the ¢?¢ command logically replaces the physical act of changing
dip switch B7. The second ¢?¢ command logically replaces the physical act
of pressing the RESET button after all configuration changes have been
made.
Note: If the user intends to embed configuration commands within the data
streams of print jobs, Option #1 Column Width should be set to 0
(infinite line length), Option #2 Lines Per Page should be set to 0
(infinite page length), and Option #15 Bold Print Emulation should be
set to C (none). Otherwise, unpredictable formatting errors could occur.
Refer to Section 13 DisplayWrite 370 Support for more information.
Download Error Messages
Errors in command sequences will result in the ULTRA sending a
download error message to the printer.
An invalid option number will result in the following message:
DOWNLOAD ERROR - BAD OPTION FIELD VALUE
If this message is printed, no change will take effect. The user must resend
the command sequence with a valid option number. If the user was sending
multiple command sequences to the ULTRA, all valid option numbers will
be changed, but the invalid option numbers will remain unchanged. A
General Configuration Report must be printed to determine which of the
options in the command sequences were valid and which were incorrect.